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Study of yield components under heat stress conditions in wheat

Balla, Krisztina and Karsai, Ildikó and Bencze, Szilvia and Kiss, Tibor and Veisz, Ottó Bálint (2013) Study of yield components under heat stress conditions in wheat. In: 63. Tagung der Vereinigung der Pflanzenzüchter und Saatgutkaufleute Österreichs, 2012. 11. 19-21., Ausztria.

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Abstract

High temperature tolerance can be characterised by measuring various plant productivity traits in different developmental stages. The present work investigated the effect of exposure to high temperature (30-35°C) at first node appearance, during early embryo development and in the grain-filling stage on the yield parameters of two winter wheat varieties. Periods of high temperature had diverse effects on wheat plants in different phenophases. The greatest differences between the various developmental stages were found for grain number, grain yield and thousand-kernel weight. Heat stress was demonstrated to have the least effect on total grain number and number of grains per spikelet on the main spike during the grain-filling period. The most pronounced reductions in the traits examined were detected when heat stress was applied during the early embryo development stage.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Global warming, high temperature, Triticum aestivum, yield parameter
Subjects: S Agriculture / mezőgazdaság > SB Plant culture / növénytermesztés
Depositing User: Krisztina Bányainé Benkő
Date Deposited: 11 Oct 2013 06:27
Last Modified: 11 Oct 2013 06:27
URI: http://real.mtak.hu/id/eprint/6864

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